Stainless steel butterfly adopt clamp-style and round threaded, simple, beautiful shape, assembly and disassembly fast, switch quickly, flexible operation, low fluid resistance, safe and reliable. It can make up defects arising from traditional connection such as flange, pipe thread, trapezoidal screw thread. Can be used with all kinds of actuators. All steel parts are made from acid-resistant stainless steel materials, sealing face is made from food silicone rubber and PTFE, meeting food hygiene standard.